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      1 /* Low level interface to valgrind, for the remote server for GDB integrated
      2    in valgrind.
      3    Copyright (C) 2011
      4    Free Software Foundation, Inc.
      5 
      6    This file is part of VALGRIND.
      7    It has been inspired from a file from gdbserver in gdb 6.6.
      8 
      9    This program is free software; you can redistribute it and/or modify
     10    it under the terms of the GNU General Public License as published by
     11    the Free Software Foundation; either version 2 of the License, or
     12    (at your option) any later version.
     13 
     14    This program is distributed in the hope that it will be useful,
     15    but WITHOUT ANY WARRANTY; without even the implied warranty of
     16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     17    GNU General Public License for more details.
     18 
     19    You should have received a copy of the GNU General Public License
     20    along with this program; if not, write to the Free Software
     21    Foundation, Inc., 51 Franklin Street, Fifth Floor,
     22    Boston, MA 02110-1301, USA.  */
     23 
     24 #include "server.h"
     25 #include "target.h"
     26 #include "regdef.h"
     27 #include "regcache.h"
     28 
     29 #include "pub_core_aspacemgr.h"
     30 #include "pub_tool_machine.h"
     31 #include "pub_core_threadstate.h"
     32 #include "pub_core_transtab.h"
     33 #include "pub_core_gdbserver.h"
     34 
     35 #include "valgrind_low.h"
     36 
     37 #include "libvex_guest_ppc64.h"
     38 
     39 static struct reg regs[] = {
     40   { "r0", 0, 64 },
     41   { "r1", 64, 64 },
     42   { "r2", 128, 64 },
     43   { "r3", 192, 64 },
     44   { "r4", 256, 64 },
     45   { "r5", 320, 64 },
     46   { "r6", 384, 64 },
     47   { "r7", 448, 64 },
     48   { "r8", 512, 64 },
     49   { "r9", 576, 64 },
     50   { "r10", 640, 64 },
     51   { "r11", 704, 64 },
     52   { "r12", 768, 64 },
     53   { "r13", 832, 64 },
     54   { "r14", 896, 64 },
     55   { "r15", 960, 64 },
     56   { "r16", 1024, 64 },
     57   { "r17", 1088, 64 },
     58   { "r18", 1152, 64 },
     59   { "r19", 1216, 64 },
     60   { "r20", 1280, 64 },
     61   { "r21", 1344, 64 },
     62   { "r22", 1408, 64 },
     63   { "r23", 1472, 64 },
     64   { "r24", 1536, 64 },
     65   { "r25", 1600, 64 },
     66   { "r26", 1664, 64 },
     67   { "r27", 1728, 64 },
     68   { "r28", 1792, 64 },
     69   { "r29", 1856, 64 },
     70   { "r30", 1920, 64 },
     71   { "r31", 1984, 64 },
     72   { "f0", 2048, 64 },
     73   { "f1", 2112, 64 },
     74   { "f2", 2176, 64 },
     75   { "f3", 2240, 64 },
     76   { "f4", 2304, 64 },
     77   { "f5", 2368, 64 },
     78   { "f6", 2432, 64 },
     79   { "f7", 2496, 64 },
     80   { "f8", 2560, 64 },
     81   { "f9", 2624, 64 },
     82   { "f10", 2688, 64 },
     83   { "f11", 2752, 64 },
     84   { "f12", 2816, 64 },
     85   { "f13", 2880, 64 },
     86   { "f14", 2944, 64 },
     87   { "f15", 3008, 64 },
     88   { "f16", 3072, 64 },
     89   { "f17", 3136, 64 },
     90   { "f18", 3200, 64 },
     91   { "f19", 3264, 64 },
     92   { "f20", 3328, 64 },
     93   { "f21", 3392, 64 },
     94   { "f22", 3456, 64 },
     95   { "f23", 3520, 64 },
     96   { "f24", 3584, 64 },
     97   { "f25", 3648, 64 },
     98   { "f26", 3712, 64 },
     99   { "f27", 3776, 64 },
    100   { "f28", 3840, 64 },
    101   { "f29", 3904, 64 },
    102   { "f30", 3968, 64 },
    103   { "f31", 4032, 64 },
    104   { "pc", 4096, 64 },
    105   { "msr", 4160, 64 },
    106   { "cr", 4224, 32 },
    107   { "lr", 4256, 64 },
    108   { "ctr", 4320, 64 },
    109   { "xer", 4384, 32 },
    110   { "fpscr", 4416, 32 },
    111   { "orig_r3", 4448, 64 },
    112   { "trap", 4512, 64 },
    113   { "vr0", 4576, 128 },
    114   { "vr1", 4704, 128 },
    115   { "vr2", 4832, 128 },
    116   { "vr3", 4960, 128 },
    117   { "vr4", 5088, 128 },
    118   { "vr5", 5216, 128 },
    119   { "vr6", 5344, 128 },
    120   { "vr7", 5472, 128 },
    121   { "vr8", 5600, 128 },
    122   { "vr9", 5728, 128 },
    123   { "vr10", 5856, 128 },
    124   { "vr11", 5984, 128 },
    125   { "vr12", 6112, 128 },
    126   { "vr13", 6240, 128 },
    127   { "vr14", 6368, 128 },
    128   { "vr15", 6496, 128 },
    129   { "vr16", 6624, 128 },
    130   { "vr17", 6752, 128 },
    131   { "vr18", 6880, 128 },
    132   { "vr19", 7008, 128 },
    133   { "vr20", 7136, 128 },
    134   { "vr21", 7264, 128 },
    135   { "vr22", 7392, 128 },
    136   { "vr23", 7520, 128 },
    137   { "vr24", 7648, 128 },
    138   { "vr25", 7776, 128 },
    139   { "vr26", 7904, 128 },
    140   { "vr27", 8032, 128 },
    141   { "vr28", 8160, 128 },
    142   { "vr29", 8288, 128 },
    143   { "vr30", 8416, 128 },
    144   { "vr31", 8544, 128 },
    145   { "vscr", 8672, 32 },
    146   { "vrsave", 8704, 32 },
    147 };
    148 static const char *expedite_regs[] = { "r1", "pc", 0 };
    149 #define num_regs (sizeof (regs) / sizeof (regs[0]))
    150 
    151 static
    152 CORE_ADDR get_pc (void)
    153 {
    154    unsigned long pc;
    155 
    156    collect_register_by_name ("pc", &pc);
    157 
    158    dlog(1, "stop pc is %p\n", (void *) pc);
    159    return pc;
    160 }
    161 
    162 static
    163 void set_pc (CORE_ADDR newpc)
    164 {
    165    Bool mod;
    166    supply_register_by_name ("pc", &newpc, &mod);
    167    if (mod)
    168       dlog(1, "set pc to %p\n", C2v (newpc));
    169    else
    170       dlog(1, "set pc not changed %p\n", C2v (newpc));
    171 }
    172 
    173 /* store registers in the guest state (gdbserver_to_valgrind)
    174    or fetch register from the guest state (valgrind_to_gdbserver). */
    175 static
    176 void transfer_register (ThreadId tid, int abs_regno, void * buf,
    177                         transfer_direction dir, int size, Bool *mod)
    178 {
    179    ThreadState* tst = VG_(get_ThreadState)(tid);
    180    int set = abs_regno / num_regs;
    181    int regno = abs_regno % num_regs;
    182    *mod = False;
    183 
    184    VexGuestPPC64State* ppc64 = (VexGuestPPC64State*) get_arch (set, tst);
    185 
    186    switch (regno) {
    187    // numbers here have to match the order of regs above
    188    // Attention: gdb order does not match valgrind order.
    189    case 0:  VG_(transfer) (&ppc64->guest_GPR0,  buf, dir, size, mod); break;
    190    case 1:  VG_(transfer) (&ppc64->guest_GPR1,  buf, dir, size, mod); break;
    191    case 2:  VG_(transfer) (&ppc64->guest_GPR2,  buf, dir, size, mod); break;
    192    case 3:  VG_(transfer) (&ppc64->guest_GPR3,  buf, dir, size, mod); break;
    193    case 4:  VG_(transfer) (&ppc64->guest_GPR4,  buf, dir, size, mod); break;
    194    case 5:  VG_(transfer) (&ppc64->guest_GPR5,  buf, dir, size, mod); break;
    195    case 6:  VG_(transfer) (&ppc64->guest_GPR6,  buf, dir, size, mod); break;
    196    case 7:  VG_(transfer) (&ppc64->guest_GPR7,  buf, dir, size, mod); break;
    197    case 8:  VG_(transfer) (&ppc64->guest_GPR8,  buf, dir, size, mod); break;
    198    case 9:  VG_(transfer) (&ppc64->guest_GPR9,  buf, dir, size, mod); break;
    199    case 10: VG_(transfer) (&ppc64->guest_GPR10, buf, dir, size, mod); break;
    200    case 11: VG_(transfer) (&ppc64->guest_GPR11, buf, dir, size, mod); break;
    201    case 12: VG_(transfer) (&ppc64->guest_GPR12, buf, dir, size, mod); break;
    202    case 13: VG_(transfer) (&ppc64->guest_GPR13, buf, dir, size, mod); break;
    203    case 14: VG_(transfer) (&ppc64->guest_GPR14, buf, dir, size, mod); break;
    204    case 15: VG_(transfer) (&ppc64->guest_GPR15, buf, dir, size, mod); break;
    205    case 16: VG_(transfer) (&ppc64->guest_GPR16, buf, dir, size, mod); break;
    206    case 17: VG_(transfer) (&ppc64->guest_GPR17, buf, dir, size, mod); break;
    207    case 18: VG_(transfer) (&ppc64->guest_GPR18, buf, dir, size, mod); break;
    208    case 19: VG_(transfer) (&ppc64->guest_GPR19, buf, dir, size, mod); break;
    209    case 20: VG_(transfer) (&ppc64->guest_GPR20, buf, dir, size, mod); break;
    210    case 21: VG_(transfer) (&ppc64->guest_GPR21, buf, dir, size, mod); break;
    211    case 22: VG_(transfer) (&ppc64->guest_GPR22, buf, dir, size, mod); break;
    212    case 23: VG_(transfer) (&ppc64->guest_GPR23, buf, dir, size, mod); break;
    213    case 24: VG_(transfer) (&ppc64->guest_GPR24, buf, dir, size, mod); break;
    214    case 25: VG_(transfer) (&ppc64->guest_GPR25, buf, dir, size, mod); break;
    215    case 26: VG_(transfer) (&ppc64->guest_GPR26, buf, dir, size, mod); break;
    216    case 27: VG_(transfer) (&ppc64->guest_GPR27, buf, dir, size, mod); break;
    217    case 28: VG_(transfer) (&ppc64->guest_GPR28, buf, dir, size, mod); break;
    218    case 29: VG_(transfer) (&ppc64->guest_GPR29, buf, dir, size, mod); break;
    219    case 30: VG_(transfer) (&ppc64->guest_GPR30, buf, dir, size, mod); break;
    220    case 31: VG_(transfer) (&ppc64->guest_GPR31, buf, dir, size, mod); break;
    221    case 32: VG_(transfer) (&ppc64->guest_VSR0,  buf, dir, size, mod); break;
    222    case 33: VG_(transfer) (&ppc64->guest_VSR1,  buf, dir, size, mod); break;
    223    case 34: VG_(transfer) (&ppc64->guest_VSR2,  buf, dir, size, mod); break;
    224    case 35: VG_(transfer) (&ppc64->guest_VSR3,  buf, dir, size, mod); break;
    225    case 36: VG_(transfer) (&ppc64->guest_VSR4,  buf, dir, size, mod); break;
    226    case 37: VG_(transfer) (&ppc64->guest_VSR5,  buf, dir, size, mod); break;
    227    case 38: VG_(transfer) (&ppc64->guest_VSR6,  buf, dir, size, mod); break;
    228    case 39: VG_(transfer) (&ppc64->guest_VSR7,  buf, dir, size, mod); break;
    229    case 40: VG_(transfer) (&ppc64->guest_VSR8,  buf, dir, size, mod); break;
    230    case 41: VG_(transfer) (&ppc64->guest_VSR9,  buf, dir, size, mod); break;
    231    case 42: VG_(transfer) (&ppc64->guest_VSR10, buf, dir, size, mod); break;
    232    case 43: VG_(transfer) (&ppc64->guest_VSR11, buf, dir, size, mod); break;
    233    case 44: VG_(transfer) (&ppc64->guest_VSR12, buf, dir, size, mod); break;
    234    case 45: VG_(transfer) (&ppc64->guest_VSR13, buf, dir, size, mod); break;
    235    case 46: VG_(transfer) (&ppc64->guest_VSR14, buf, dir, size, mod); break;
    236    case 47: VG_(transfer) (&ppc64->guest_VSR15, buf, dir, size, mod); break;
    237    case 48: VG_(transfer) (&ppc64->guest_VSR16, buf, dir, size, mod); break;
    238    case 49: VG_(transfer) (&ppc64->guest_VSR17, buf, dir, size, mod); break;
    239    case 50: VG_(transfer) (&ppc64->guest_VSR18, buf, dir, size, mod); break;
    240    case 51: VG_(transfer) (&ppc64->guest_VSR19, buf, dir, size, mod); break;
    241    case 52: VG_(transfer) (&ppc64->guest_VSR20, buf, dir, size, mod); break;
    242    case 53: VG_(transfer) (&ppc64->guest_VSR21, buf, dir, size, mod); break;
    243    case 54: VG_(transfer) (&ppc64->guest_VSR22, buf, dir, size, mod); break;
    244    case 55: VG_(transfer) (&ppc64->guest_VSR23, buf, dir, size, mod); break;
    245    case 56: VG_(transfer) (&ppc64->guest_VSR24, buf, dir, size, mod); break;
    246    case 57: VG_(transfer) (&ppc64->guest_VSR25, buf, dir, size, mod); break;
    247    case 58: VG_(transfer) (&ppc64->guest_VSR26, buf, dir, size, mod); break;
    248    case 59: VG_(transfer) (&ppc64->guest_VSR27, buf, dir, size, mod); break;
    249    case 60: VG_(transfer) (&ppc64->guest_VSR28, buf, dir, size, mod); break;
    250    case 61: VG_(transfer) (&ppc64->guest_VSR29, buf, dir, size, mod); break;
    251    case 62: VG_(transfer) (&ppc64->guest_VSR30, buf, dir, size, mod); break;
    252    case 63: VG_(transfer) (&ppc64->guest_VSR31, buf, dir, size, mod); break;
    253    case 64: VG_(transfer) (&ppc64->guest_CIA,   buf, dir, size, mod); break;
    254    case 65: *mod = False; break; // VEX does not model Machine State Register
    255    case 66: {
    256       UInt cr = LibVEX_GuestPPC64_get_CR (ppc64);
    257       if (dir == valgrind_to_gdbserver) {
    258          VG_(transfer) (&cr, buf, dir, size, mod);
    259       } else {
    260          UInt newcr;
    261          VG_(transfer) (&newcr, buf, dir, size, mod);
    262          *mod = newcr != cr;
    263          LibVEX_GuestPPC64_put_CR (newcr, ppc64);
    264       }
    265       break;
    266    }
    267    case 67: VG_(transfer) (&ppc64->guest_LR,    buf, dir, size, mod); break;
    268    case 68: VG_(transfer) (&ppc64->guest_CTR,   buf, dir, size, mod); break;
    269    case 69: {
    270       UInt xer = LibVEX_GuestPPC64_get_XER (ppc64);
    271       if (dir == valgrind_to_gdbserver) {
    272          VG_(transfer) (&xer, buf, dir, size, mod);
    273       } else {
    274          UInt newxer;
    275          VG_(transfer) (&newxer, buf, dir, size, mod);
    276          *mod = newxer != xer;
    277          LibVEX_GuestPPC64_put_XER (newxer, ppc64);
    278       }
    279       break;
    280    }
    281    case 70:  VG_(transfer) (&ppc64->guest_FPROUND, buf, dir, size, mod); break;
    282    case 71:  *mod = False; break; // GDBTD???? VEX { "orig_r3", 4448, 64 },
    283    case 72:  *mod = False; break; // GDBTD???? VEX { "trap", 4512, 64 },
    284    case 73:  VG_(transfer) (&ppc64->guest_VSR32, buf, dir, size, mod); break;
    285    case 74:  VG_(transfer) (&ppc64->guest_VSR33, buf, dir, size, mod); break;
    286    case 75:  VG_(transfer) (&ppc64->guest_VSR34, buf, dir, size, mod); break;
    287    case 76:  VG_(transfer) (&ppc64->guest_VSR35, buf, dir, size, mod); break;
    288    case 77:  VG_(transfer) (&ppc64->guest_VSR36, buf, dir, size, mod); break;
    289    case 78:  VG_(transfer) (&ppc64->guest_VSR37, buf, dir, size, mod); break;
    290    case 79:  VG_(transfer) (&ppc64->guest_VSR38, buf, dir, size, mod); break;
    291    case 80:  VG_(transfer) (&ppc64->guest_VSR39, buf, dir, size, mod); break;
    292    case 81:  VG_(transfer) (&ppc64->guest_VSR40, buf, dir, size, mod); break;
    293    case 82:  VG_(transfer) (&ppc64->guest_VSR41, buf, dir, size, mod); break;
    294    case 83:  VG_(transfer) (&ppc64->guest_VSR42, buf, dir, size, mod); break;
    295    case 84:  VG_(transfer) (&ppc64->guest_VSR43, buf, dir, size, mod); break;
    296    case 85:  VG_(transfer) (&ppc64->guest_VSR44, buf, dir, size, mod); break;
    297    case 86:  VG_(transfer) (&ppc64->guest_VSR45, buf, dir, size, mod); break;
    298    case 87:  VG_(transfer) (&ppc64->guest_VSR46, buf, dir, size, mod); break;
    299    case 88:  VG_(transfer) (&ppc64->guest_VSR47, buf, dir, size, mod); break;
    300    case 89:  VG_(transfer) (&ppc64->guest_VSR48, buf, dir, size, mod); break;
    301    case 90:  VG_(transfer) (&ppc64->guest_VSR49, buf, dir, size, mod); break;
    302    case 91:  VG_(transfer) (&ppc64->guest_VSR50, buf, dir, size, mod); break;
    303    case 92:  VG_(transfer) (&ppc64->guest_VSR51, buf, dir, size, mod); break;
    304    case 93:  VG_(transfer) (&ppc64->guest_VSR52, buf, dir, size, mod); break;
    305    case 94:  VG_(transfer) (&ppc64->guest_VSR53, buf, dir, size, mod); break;
    306    case 95:  VG_(transfer) (&ppc64->guest_VSR54, buf, dir, size, mod); break;
    307    case 96:  VG_(transfer) (&ppc64->guest_VSR55, buf, dir, size, mod); break;
    308    case 97:  VG_(transfer) (&ppc64->guest_VSR56, buf, dir, size, mod); break;
    309    case 98:  VG_(transfer) (&ppc64->guest_VSR57, buf, dir, size, mod); break;
    310    case 99:  VG_(transfer) (&ppc64->guest_VSR58, buf, dir, size, mod); break;
    311    case 100: VG_(transfer) (&ppc64->guest_VSR59, buf, dir, size, mod); break;
    312    case 101: VG_(transfer) (&ppc64->guest_VSR60, buf, dir, size, mod); break;
    313    case 102: VG_(transfer) (&ppc64->guest_VSR61, buf, dir, size, mod); break;
    314    case 103: VG_(transfer) (&ppc64->guest_VSR62, buf, dir, size, mod); break;
    315    case 104: VG_(transfer) (&ppc64->guest_VSR63, buf, dir, size, mod); break;
    316    case 105: VG_(transfer) (&ppc64->guest_VSCR, buf, dir, size, mod); break;
    317    case 106: VG_(transfer) (&ppc64->guest_VRSAVE, buf, dir, size, mod); break;
    318    default: vg_assert(0);
    319    }
    320 }
    321 
    322 static
    323 char* target_xml (Bool shadow_mode)
    324 {
    325    if (shadow_mode) {
    326       return "powerpc-altivec64l-valgrind.xml";
    327    } else {
    328       return "powerpc-altivec64l.xml";
    329    }
    330 }
    331 
    332 static struct valgrind_target_ops low_target = {
    333    num_regs,
    334    regs,
    335    1, //r1
    336    transfer_register,
    337    get_pc,
    338    set_pc,
    339    "ppc64",
    340    target_xml
    341 };
    342 
    343 void ppc64_init_architecture (struct valgrind_target_ops *target)
    344 {
    345    *target = low_target;
    346    set_register_cache (regs, num_regs);
    347    gdbserver_expedite_regs = expedite_regs;
    348 }
    349